Posts like this one make me jealous. Such clear, succinct writing about something terribly complicated. Also, it’s interesting to see how one’s profession can so profoundly color the way he or she sees the world.
Related: this is why I’ve been so anti-software lately. It’s bailing wire and duct tape all the way down. Seeing more layers of software applied to critical things that desperately need to not fail (e.g., cars, payment systems) makes me freak out a little bit.